Opel/Vauxhall Corsa C Cigarette + USB + Voltmeter Socket

I made this socket for adding a voltmeter and USB charger for my Corsa C. It snaps into place.

The voltmeter is one of those chinese ones that also includes 2 fast charging usb sockets and I just connected it in paralell with the lighter. 

DON'T USE PLA, I tried and it failed because of the heat. I made another with ABS and no problems so far, also I reinforced the lighter area so it is stiffer.